Dacron pretreatment, dying, cleaning, softening and one-bath processing method

The invention discloses a dacron pretreatment, dying, cleaning, softening and one-bath processing method, which comprises the following steps that high-temperature-resistance degreasers BOR, polyurethane softening agents, nonionic leveling agents LD, acetic acid, dye AR and polyester cloth are added into the same dye bath, the degreasing pretreatment, the reduction cleaning, the dyeing and the softening treatment are carried out step by step in the same dye bath, and finally, the water washing is carried out; and the process conditions are controlled as follows: bath ratio is 1:(10-15), the polyurethane softening agents are 25 to 30g/L, the high-temperature-resistance degreasers BOR are 1 to 1.5g/L, the nonionic leveling agents LD are 2 to 3g/L, the acetic acid is 1.5 to 2g/L, and the dye AR is x percent. The pretreatment, dyeing, reduction cleaning finishing and softening finishing one-bath completion is realized through selecting proper dye auxiliaries, regulating the dye bath indexes and the like. The proc